Sand-blasting apparatus.



H. B. HEASLBT..

' SAND BLASTING APPARATUS.

APPLICATION FILED PBB.5, 1912.

famed sept. 3, 191.2-

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IVENTOR H. B. HEASLET- SAND BLASTING APPARATUS. 'APPLICATION FILED FEB. 5, 1912.

Patnted Sept. 3, 1912.

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WITNESSES UNITED STATES PATENT oEEicE.

HARVEY B. HEASLET, OF NEW, BRIGHTON, PENNSYLVANIA.

SAND-BLASTING APPARATUS.

' Specification of Letters Patent.

Patented Sept. 3, 1912.

v Application filed 'February 5, 1912. Serial No. 675,405.

fication, in which- Figure 1 is a side elevation showing one form of my improved apparatus; Fig. 2 is a sectional front elevation; Figs. 3, 4 and 5 lare cross sections of thefframe on the lines III-III, IV`IV and V-V of Fig. l;

Fig. 6 is a front elevation of the stand for the article being sand blasted; and Fig. 7 is a view similar to Fig. 2, showinga modified form of support.

0 My invention relates to the. sand blasting of castings, nirticularly those which are to be enameled tor use as sanitary ware, such as bath tubs, sinks, wash basins, etc.

In th sand blasting operations, the grains of shar sa'nd rebound and fly oil" at different angles from the article, showering the operator and necessitating the wearing vof helmets and other protective devices. The

work has been diiiicult, injurious and ar duous.

My invention is .designed to overcome these difficulties, and to remove the operator suiiiently far from the article, so that a shield, such as a wall, may be interposed 55 between him and the article, to protect him pended claims.

In the preferred form, the connections for operating the nozzle and the article support project through a hole or opening inthe frame or support 10, for the hose 11 of the sand blast machine. Figs. 3, 4 and 5 show the preferred form of this support or frame, to thefront end of which is pivoted an ordinary bell crank lever 12. To one arm of this lever is pivotallysecured a clamp 13 for the nozzle, while to the other arm is pivotally connected a link 14, extending to a hand lever 15,-pivoted to the supporting frame 10.

An adjustable counterweight. 16 is pref? erably secured to the rear end of the frame, 1n order to counterbalance the. parts forward ofl the supporting trunnions.-

In the use of the device, 1t may be moved up to an opening through theiwall, such a door, opening adjacent to the ware being supported in the next room. l`he operator in the .adjacent room can swing the supporting frame on its horizontal `ball bearings and turn the nozzle by the handle 15, so as to reach all parts of the article being sand blasted.

v Instead of using the gun carriage style of support, I may employ an overhead support, such as shown, for example, in Fig. 7. In this fgure,.17 represents the trolley of an overhead track, such as an overhead crane. From this trolley depends a swivel bolt 18, carrying a yoke 19, having hooked ends 193. to receive the trunnion shaft 9a, 'similar to the, shaft 9 of the first forni. Inthis case, the horizontal movement is obtained by the swivel and the vertical movement may be obtainedin the same manner shown in the first form. the similar handle being indi.:

cated at 15a.

Vith this nozzle-operating apparatus, I

also preferably employ means for moving 95 the article to different positions, such means being operable from a' distant point, preferably, where the operator controls the sand blast. In the form shown, 20 is an oscillatwall, s that the wall protects the operator from t e effect of the blast, after striking the article.

ing supporting beam having trunnions 100 mounted 1n bearings 21. Through a bearing in the beam 2O extends a. shaft- 22, supported J In the drawings, referring to Figs. 1 to 6,

' inclusive, in which I show apreferred form, 2 represents the frame of a gun, carriage having a depending stock 3, .and supportings 8, to receive the trunnions of a shaft 9. To this shaft is secured the oscillating by a collar 23. This shaft carries at its upper end the tray or receiving frame 24, in which the article, such as the bath tub is set. Such an article is indicated in dotted lines in Fig. l. An angle frame 25 has a bearing 26, surrounding the lower part ofthe shaft 22, this frame also carrying bearing 27, for angle shaft 28, having bevel wheel 29, intermeshing with bevel wheel 30 on the shaft 22. The sha-ft 28 extends to :near

the handle l5, and is provided with a hand crank 31, by which it may be turned and by which also the entire frame may be rocked in the ball-and-socket supporting connection. i

In operating the device, lthe angle frame 25 is preferably mounted in a pit under the ground level in the sand-blasting room, with the operating handle 28 projecting out through the door or opening through which the nozzle-operating device extends.- By

' means of this handle, the operator can turn the article horizontally and by pressing up and down on the handle, he can swing the article back and forth thus giving it all the positions desired.

The advantages oit my invention will be obvious to those skilled in the art, since the sand blast operator does not need armor or protective devices, and the work is made easier, cheaper and better.

I do not desire to limit myself to the' particular construction and arrang'ement of the parts which I have herein shown and described, as various changes-may be made in the details thereof,`without departing from the spirit and scope of my invention, as set forth in the appended claims.

I claim:

l. Apparatus of the character described, comprising a` wheeled support, a yoke carried thereby, and pivoted to move about a vertical axis, a horizontal shaft journaled in bearings in said yoke, a longitudinally extending 'frame carried by the shaft, and a flexible hose mounted on said frame and terminating in a blast nozzle; substantially as described.

2. Apparatus of the character described, comprising a wheeled support, a yoke carried thereby, and pivoted to move about a 'vertical axis, a horizontal shaft journaled in bearings in said yoke, a longitudinally extending frame carried by the Shaft, and a flexible hose mounted on said frame and term'inating in a blast nozzle, the frame having a vertically movable ,member for carrying the nozzle; substantially as described.

3. In apparatus of the character described, a frame, supporting means whereby said frame can be moved in a longitudinal horizontal direction, an angular. horizontal direction, and also oscillated in a vertical plane, and a blast pipe and nozzle supported on said frame, together with a hand lever and connections operated by said lever whereby said nozzle may be moved in a vertical plane independently of the movements of the frame; substantially as described.

4. In apparatus of the cha/racter described, a frame, supporting means whereby said frame can be moved in a longitudinal horizontal direction, an angular horizontal direction, and also oScillated in a vertical plane, and a flexible blast pipe and nozzle supported on said frame, together with means whereby the nozzle may be flexed in a vertical direction independent of the trame; substantially as described.

5. Apparatus of the character described, comprising a wheeled support, a yoke carried thereby, and pivoted to move about a `vertical axis, a horizontalshaft journaled in bearings in said yoke, a longitudinally extending frame carried by Athe shaft, a flexible hose mounted on said frame and terminating in a blast nozzle, together with an independently movable'support for said nozzle, and actuating connections for said support extending back to the wheeled support; substantially as described.

In testimony whereof, I have hereunto set my hand.

HARVEY B. HEASLET. IVitnesses:

C. P. BYRNES,

H. M. CORWIN.

Copies ef this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington. D. 0.", 

